Attachment device



FIG. 1 is a top, rear exploded perspective view of an attachment device in accordance with our new design;

FIG. 2 is a bottom, front perspective view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a left view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The claim to an attachment device is directed to the collective appearance of the two parts shown in the drawings. The broken lines shown in the drawings illustrate portions of the attachment device and form no part of the claimed design. 

CLAIM The ornamental design for an attachment device, as shown and described. 